MESON Chess Problem Database

Problem Display
PID: 78812 (nBN5/1p1N4/k3qR2/p1Q3rr/P1R5/1K2b3/8/5B2 w - - 0 1)

Morse, Christopher Jeremy

The Tablet, 1960

(First published on Sat Jun 18 1960)

nBN5/1p1N4/k3qR2/p1Q3rr/P1R5/1K2b3/8/5B2

#2

9 + 8

15239 Valois Notebooks 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Qb6+
      • 2.Rb4#
    • 1...Bc1
      • 2.Qa7#
    • 1...Bd2
      • 2.Qa7#
    • 1...Bf4
      • 2.Qa7#
  • Tries
    • 1.Be5?
      • threat
        • 2.Sb8#
        • 2.Qb5#
      • 1...Qb6+
        • 2.Rb4#
        • 2.Qb5#
      • 1...Rxe5
        • 2.Sb8#
      • 1...Bxc5
        • 2.Sxc5#
        • 2.Sb8#
      • 1...b5
        • 2.Qxb5#
      • 1...Sc7
        • 2.Sb8#
      • 1...b6!
    • 1.Rxe6+?
      • 1...Sb6
        • 2.Rc1#
        • 2.Rc2#
        • 2.Rc3#
        • 2.Rb4#
        • 2.Rd4#
        • 2.Rce4#
        • 2.Rf4#
        • 2.Rg4#
        • 2.Rh4#
        • 2.Rxb6#
      • 1...b6!
  • Keys
    • 1.Qd5!
      • threat
        • 2.Rc6#
      • 1...Qb6+
        • 2.Rb4#
      • 1...Qc6
        • 2.Rcxc6#
      • 1...Bc5
        • 2.Sxc5#
      • 1...Bb6
        • 2.Re4#
      • 1...b5
        • 2.axb5#
      • 1...b6
        • 2.Qxa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • Q(f);CHECK,N_PINR(D)::B(A)+R(D)
    • B(a);N_GUARD::QAR1(E)
  • Tries
    • Try
      • B(H);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);XB(H)::S(G)
        • P(g);::QAB1(E),XP(g)
        • S(h);::S(G)
      • Refutation
        • P(g);N_SPINQ(f)
    • Try
      • R(F);CHECK,N_SPINR(D),XQ(f)
      • Refutation
        • P(g);P_SPINP(g)
  • Actual
    • Q(E);N_SPINR(D)
    • Threat
      • B(A)+R(D),DCHECK
    • Vars
      • Q(f);CHECK,S_CUTP(g)::B(A)+R(D)
      • Q(f);::B(A)+R(D),DCHECK,XQ(f)
      • B(a);N_GUARD::S(G),XB(a)
      • B(a);N_SPINQ(f),S_CUTP(g)::B(A)+R(D)
      • P(g);OGATE::P(C),XP(g)
      • P(g);N_SPINQ(f),OGATE::QAR2(E),XS(h)
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